In hard water areas, the use of water in heating and cooling systems invariably results in a build up of limescale (hard water) deposits within the system, usually in the highest temperature zones.  

The resultant scale not only restricts water flow, but acts a very effective insulation, reducing heat transfer efficiency, and increasing running costs. Heavy scale deposits can also lead to localized overheating of heat transfer surfaces, resulting in premature failure of heating appliances. 

In all areas, rust and corrosion may take place in heating and cooling systems, leading to a build up of corrosion deposits, and a reduction in efficiency. 

DESCRIPTION: 

ScaleB-30 is a powerful & economic liquid for use in cleaning heavily scaled equipment, where speed and high solvency are critical. Rapidly dissolves limescale and rust. Contains wetting agents to penetrate heavy deposits. Safe to use with steel cast iron, copper, brass and most plastics. Scale B-30 formulated form a blend of acid, corrosion inhibitors designed to quickly remove calcium carbonate/ magnesium scale (limescale) from cooling tower surfaces. Scale B-30 contains corrosion inhibitors specifically designed to prevent acid attack on steel, iron, metal such as copper etc., which are commonly used in the today’s Cooling Towers . 

Where it is used

The function of a Cooling Tower is to remove heat from the cooling system water after the water has picked up heat while passing through the water-cooled condenser. The heated water from the water-cooled condenser/ heat exchanger is then broken up into droplets by circulating the water over the tower fill inside the cooling tower. The forced drought within the tower causes ambient air to pass through the water where a portion of the water is evaporated thereby reducing the temperature of the water by 7-10*F. The cooled water is then forced by the re-circulating pump back through the condenser/heat exchanger where the process is again repeated. 

Scale builds up in the condenser/heat exchanger tower due to the over-concentration of the mineral content of the system water. This over-concentration of minerals can be caused by the lack of controlled bleed off. 

If there is no bleed-off in a system the mineral content will over-concentrate due to : 

The introduction of untreated make-up water to the system, which adds solids to the system water.  

Water is constantly being lost to the system due to both evaporation and windage. The lost water is automatically replaced in the cooling tower by the automatic float assembly in the cooling tower which will introduce fresh make-up water as soon as the water falls below a set level in the tower. Neither chemicals nor minerals are lost to the system through evaporation. Therefore, if there is no bleed-off, neither chemicals or mineral levels can be controlled within the system,  and  scale growth will occur.

How it is used

Calcium/magnesium scale can easily be removed from the system by applying Scale B 30 to the system sump at a rate of 15 kg of Scale B-30 for every 100 ltr of system water. Initially flush the system with clean water to remove any loose contamination. Then refill the system and apply scale remover as noted. Operate system for 30 minutes to 2 hours or until head pressure returns to normal. Circulate the solution until all the scale is dissolved. If head pressure does not return to normal or if scale is still present, repeat treatment. After cleaning, drain and rinse the system thoroughly using an alkaline solution to neutralize the system (CV-Passivator recommended).

Note:-  Dilute one part of Scale B- 30  with 3-6 parts of water. Use it with Descaling pump. 
 

Important: The water temperature in the cooling tower must be in excess of 80*F to insure that the      Scale B-30 will react with the scale deposits in the tower.

Source : Company Catalog